BE542887A - - Google Patents

Info

Publication number
BE542887A
BE542887A BE542887DA BE542887A BE 542887 A BE542887 A BE 542887A BE 542887D A BE542887D A BE 542887DA BE 542887 A BE542887 A BE 542887A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE542887A publication Critical patent/BE542887A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Actuator (AREA)
BE542887D 1954-12-14 BE542887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1116525T 1954-12-14

Publications (1)

Publication Number Publication Date
BE542887A true BE542887A (en)

Family

ID=9629503

Family Applications (1)

Application Number Title Priority Date Filing Date
BE542887D BE542887A (en) 1954-12-14

Country Status (3)

Country Link
BE (1) BE542887A (en)
FR (2) FR1116525A (en)
GB (1) GB796827A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055626A (en) * 1960-04-09 1962-09-25 Mastabar Mining Equip Co Ltd Hydraulic supports
US3073562A (en) * 1960-04-19 1963-01-15 Mastabar Mining Equip Co Ltd Hydraulic supports

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055626A (en) * 1960-04-09 1962-09-25 Mastabar Mining Equip Co Ltd Hydraulic supports
US3073562A (en) * 1960-04-19 1963-01-15 Mastabar Mining Equip Co Ltd Hydraulic supports

Also Published As

Publication number Publication date
FR1116525A (en) 1956-05-08
GB796827A (en) 1958-06-18
FR67964E (en) 1958-03-26

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